{\r
u32 d=0;\r
\r
- if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r
-\r
a&=0xffffff;\r
\r
- if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r
+ switch (a >> 17)\r
+ {\r
+ case 0x00>>1: // BIOS: 000000 - 020000\r
+ d = *(u8 *)(Pico_mcd->bios+(a^1));\r
+ break;\r
+ case 0x02>>1: // prg RAM\r
+ if ((Pico_mcd->m.busreq&3)!=1) {\r
+ u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
+ d = *(prg_bank+((a^1)&0x1ffff));\r
+ }\r
+ break;\r
+ case 0x20>>1: // word RAM: 200000 - 220000\r
+ wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r
+ a &= 0x1ffff;\r
+ if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
+ int bank = Pico_mcd->s68k_regs[3]&1;\r
+ d = Pico_mcd->word_ram1M[bank][a^1];\r
+ } else {\r
+ // allow access in any mode, like Gens does\r
+ d = Pico_mcd->word_ram2M[a^1];\r
+ }\r
+ wrdprintf("ret = %02x", (u8)d);\r
+ break;\r
+ case 0x22>>1: // word RAM: 220000 - 240000\r
+ wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r
+ if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
+ int bank = Pico_mcd->s68k_regs[3]&1;\r
+ a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r
+ d = Pico_mcd->word_ram1M[bank][a^1];\r
+ } else {\r
+ // allow access in any mode, like Gens does\r
+ d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r
+ }\r
+ wrdprintf("ret = %02x", (u8)d);\r
+ break;\r
+ case 0xc0>>1: case 0xc2>>1: case 0xc4>>1: case 0xc6>>1:\r
+ case 0xc8>>1: case 0xca>>1: case 0xcc>>1: case 0xce>>1:\r
+ case 0xd0>>1: case 0xd2>>1: case 0xd4>>1: case 0xd6>>1:\r
+ case 0xd8>>1: case 0xda>>1: case 0xdc>>1: case 0xde>>1:\r
+ // VDP\r
+ if ((a&0xe700e0)==0xc00000) {\r
+ d=PicoVideoRead(a);\r
+ if ((a&1)==0) d>>=8;\r
+ }\r
+ break;\r
+ case 0xe0>>1: case 0xe2>>1: case 0xe4>>1: case 0xe6>>1:\r
+ case 0xe8>>1: case 0xea>>1: case 0xec>>1: case 0xee>>1:\r
+ case 0xf0>>1: case 0xf2>>1: case 0xf4>>1: case 0xf6>>1:\r
+ case 0xf8>>1: case 0xfa>>1: case 0xfc>>1: case 0xfe>>1:\r
+ // RAM:\r
+ d = *(u8 *)(Pico.ram+((a^1)&0xffff));\r
+ break;\r
+ default:\r
+ if ((a&0xff4000)==0xa00000) { d=z80Read8(a); break; } // Z80 Ram\r
+ if ((a&0xffffc0)==0xa12000)\r
+ rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r
\r
- // prg RAM\r
- if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r
- u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
- d = *(prg_bank+((a^1)&0x1ffff));\r
- goto end;\r
- }\r
+ d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r
\r
- // word RAM\r
- if ((a&0xfc0000)==0x200000) {\r
- wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r
- if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
- int bank = Pico_mcd->s68k_regs[3]&1;\r
- if (a >= 0x220000)\r
- a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r
- else a &= 0x1ffff;\r
- d = Pico_mcd->word_ram1M[bank][a^1];\r
- } else {\r
- // allow access in any mode, like Gens does\r
- d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r
- }\r
- wrdprintf("ret = %02x", (u8)d);\r
- goto end;\r
+ if ((a&0xffffc0)==0xa12000)\r
+ rdprintf("ret = %02x", (u8)d);\r
+ break;\r
}\r
\r
- if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r
-\r
- if ((a&0xffffc0)==0xa12000)\r
- rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r
-\r
- d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r
-\r
- if ((a&0xffffc0)==0xa12000)\r
- rdprintf("ret = %02x", (u8)d);\r
-\r
- end:\r
\r
#ifdef __debug_io\r
dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r
{\r
u32 d=0;\r
\r
- if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r
-\r
a&=0xfffffe;\r
\r
- if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r
+ switch (a >> 17)\r
+ {\r
+ case 0x00>>1: // BIOS: 000000 - 020000\r
+ d = *(u16 *)(Pico_mcd->bios+a);\r
+ break;\r
+ case 0x02>>1: // prg RAM\r
+ if ((Pico_mcd->m.busreq&3)!=1) {\r
+ u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
+ wrdprintf("m68k_prgram r16: [%i,%06x] @%06x", Pico_mcd->s68k_regs[3]>>6, a, SekPc);\r
+ d = *(u16 *)(prg_bank+(a&0x1fffe));\r
+ wrdprintf("ret = %04x", d);\r
+ }\r
+ break;\r
+ case 0x20>>1: // word RAM: 200000 - 220000\r
+ wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r
+ a &= 0x1fffe;\r
+ if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
+ int bank = Pico_mcd->s68k_regs[3]&1;\r
+ d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r
+ } else {\r
+ // allow access in any mode, like Gens does\r
+ d = *(u16 *)(Pico_mcd->word_ram2M+a);\r
+ }\r
+ wrdprintf("ret = %04x", d);\r
+ break;\r
+ case 0x22>>1: // word RAM: 220000 - 240000\r
+ wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r
+ if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
+ int bank = Pico_mcd->s68k_regs[3]&1;\r
+ a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r
+ d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r
+ } else {\r
+ // allow access in any mode, like Gens does\r
+ d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r
+ }\r
+ wrdprintf("ret = %04x", d);\r
+ break;\r
+ case 0xc0>>1: case 0xc2>>1: case 0xc4>>1: case 0xc6>>1:\r
+ case 0xc8>>1: case 0xca>>1: case 0xcc>>1: case 0xce>>1:\r
+ case 0xd0>>1: case 0xd2>>1: case 0xd4>>1: case 0xd6>>1:\r
+ case 0xd8>>1: case 0xda>>1: case 0xdc>>1: case 0xde>>1:\r
+ // VDP\r
+ if ((a&0xe700e0)==0xc00000)\r
+ d=PicoVideoRead(a);\r
+ break;\r
+ case 0xe0>>1: case 0xe2>>1: case 0xe4>>1: case 0xe6>>1:\r
+ case 0xe8>>1: case 0xea>>1: case 0xec>>1: case 0xee>>1:\r
+ case 0xf0>>1: case 0xf2>>1: case 0xf4>>1: case 0xf6>>1:\r
+ case 0xf8>>1: case 0xfa>>1: case 0xfc>>1: case 0xfe>>1:\r
+ // RAM:\r
+ d=*(u16 *)(Pico.ram+(a&0xfffe));\r
+ break;\r
+ default:\r
+ if ((a&0xffffc0)==0xa12000)\r
+ rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r
\r
- // prg RAM\r
- if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r
- u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
- wrdprintf("m68k_prgram r16: [%i,%06x] @%06x", Pico_mcd->s68k_regs[3]>>6, a, SekPc);\r
- d = *(u16 *)(prg_bank+(a&0x1fffe));\r
- wrdprintf("ret = %04x", d);\r
- goto end;\r
- }\r
+ d = OtherRead16(a, 16);\r
\r
- // word RAM\r
- if ((a&0xfc0000)==0x200000) {\r
- wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r
- if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
- int bank = Pico_mcd->s68k_regs[3]&1;\r
- if (a >= 0x220000)\r
- a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r
- else a &= 0x1fffe;\r
- d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r
- } else {\r
- // allow access in any mode, like Gens does\r
- d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r
- }\r
- wrdprintf("ret = %04x", d);\r
- goto end;\r
+ if ((a&0xffffc0)==0xa12000)\r
+ rdprintf("ret = %04x", d);\r
+ break;\r
}\r
\r
- if ((a&0xffffc0)==0xa12000)\r
- rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r
-\r
- d = OtherRead16(a, 16);\r
-\r
- if ((a&0xffffc0)==0xa12000)\r
- rdprintf("ret = %04x", d);\r
-\r
- end:\r
\r
#ifdef __debug_io\r
dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r
{\r
u32 d=0;\r
\r
- if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r
-\r
a&=0xfffffe;\r
\r
- if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r
-\r
- // prg RAM\r
- if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r
- u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
- u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r
- d = (pm[0]<<16)|pm[1];\r
- goto end;\r
- }\r
-\r
- // word RAM\r
- if ((a&0xfc0000)==0x200000) {\r
- wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r
- if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
- int bank = Pico_mcd->s68k_regs[3]&1;\r
- if (a >= 0x220000) { // cell arranged\r
+ switch (a >> 17)\r
+ {\r
+ case 0x00>>1: { // BIOS: 000000 - 020000\r
+ u16 *pm=(u16 *)(Pico_mcd->bios+a);\r
+ d = (pm[0]<<16)|pm[1];\r
+ break;\r
+ }\r
+ case 0x02>>1: // prg RAM\r
+ if ((Pico_mcd->m.busreq&3)!=1) {\r
+ u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
+ u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r
+ d = (pm[0]<<16)|pm[1];\r
+ }\r
+ break;\r
+ case 0x20>>1: // word RAM: 200000 - 220000\r
+ wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r
+ a&=0x1fffe;\r
+ if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r
+ int bank = Pico_mcd->s68k_regs[3]&1;\r
+ u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r
+ d = (pm[0]<<16)|pm[1];\r
+ } else {\r
+ // allow access in any mode, like Gens does\r
+ u16 *pm=(u16 *)(Pico_mcd->word_ram2M+a);\r
+ d = (pm[0]<<16)|pm[1];\r
+ }\r
+ wrdprintf("ret = %08x", d);\r
+ break;\r
+ case 0x22>>1: // word RAM: 220000 - 240000\r
+ wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r
+ if (Pico_mcd->s68k_regs[3]&4) { // 1M mode, cell arranged?\r
u32 a1, a2;\r
+ int bank = Pico_mcd->s68k_regs[3]&1;\r
a1 = (a&2) | (cell_map(a >> 2) << 2);\r
if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r
else a2 = a1 + 2;\r
d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r
d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r
} else {\r
- u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r
+ // allow access in any mode, like Gens does\r
+ u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r
+ d = (pm[0]<<16)|pm[1];\r
}\r
- } else {\r
- // allow access in any mode, like Gens does\r
- u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r
+ wrdprintf("ret = %08x", d);\r
+ break;\r
+ case 0xc0>>1: case 0xc2>>1: case 0xc4>>1: case 0xc6>>1:\r
+ case 0xc8>>1: case 0xca>>1: case 0xcc>>1: case 0xce>>1:\r
+ case 0xd0>>1: case 0xd2>>1: case 0xd4>>1: case 0xd6>>1:\r
+ case 0xd8>>1: case 0xda>>1: case 0xdc>>1: case 0xde>>1:\r
+ // VDP\r
+ d = (PicoVideoRead(a)<<16)|PicoVideoRead(a+2);\r
+ break;\r
+ case 0xe0>>1: case 0xe2>>1: case 0xe4>>1: case 0xe6>>1:\r
+ case 0xe8>>1: case 0xea>>1: case 0xec>>1: case 0xee>>1:\r
+ case 0xf0>>1: case 0xf2>>1: case 0xf4>>1: case 0xf6>>1:\r
+ case 0xf8>>1: case 0xfa>>1: case 0xfc>>1: case 0xfe>>1: {\r
+ // RAM:\r
+ u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r
+ d = (pm[0]<<16)|pm[1];\r
+ break;\r
}\r
- wrdprintf("ret = %08x", d);\r
- goto end;\r
- }\r
+ default:\r
+ if ((a&0xffffc0)==0xa12000)\r
+ rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r
\r
- if ((a&0xffffc0)==0xa12000)\r
- rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r
+ d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r
\r
- d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r
+ if ((a&0xffffc0)==0xa12000)\r
+ rdprintf("ret = %08x", d);\r
+ break;\r
+ }\r
\r
- if ((a&0xffffc0)==0xa12000)\r
- rdprintf("ret = %08x", d);\r
\r
- end:\r
#ifdef __debug_io\r
dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r
#endif\r
return;\r
}\r
\r
- a&=0xffffff;\r
-\r
// prg RAM\r
if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r
u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
return;\r
}\r
\r
+ a&=0xffffff;\r
+\r
// word RAM\r
if ((a&0xfc0000)==0x200000) {\r
wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r
return;\r
}\r
\r
- a&=0xfffffe;\r
-\r
// prg RAM\r
if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r
u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
return;\r
}\r
\r
+ a&=0xfffffe;\r
+\r
// word RAM\r
if ((a&0xfc0000)==0x200000) {\r
wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r
return;\r
}\r
\r
+ // VDP\r
+ if ((a&0xe700e0)==0xc00000) {\r
+ PicoVideoWrite(a,(u16)d);\r
+ return;\r
+ }\r
+\r
OtherWrite16(a,d);\r
}\r
#endif\r
return;\r
}\r
\r
- a&=0xfffffe;\r
-\r
// prg RAM\r
if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r
u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r
return;\r
}\r
\r
+ a&=0xfffffe;\r
+\r
// word RAM\r
if ((a&0xfc0000)==0x200000) {\r
if (d != 0) // don't log clears\r
if ((a&0x3e) == 0xe) dprintf("m68k FIXME: w32 [%02x]", a&0x3f);\r
}\r
\r
+ // VDP\r
+ if ((a&0xe700e0)==0xc00000)\r
+ {\r
+ PicoVideoWrite(a, (u16)(d>>16));\r
+ PicoVideoWrite(a+2,(u16)d);\r
+ return;\r
+ }\r
+\r
OtherWrite16(a, (u16)(d>>16));\r
OtherWrite16(a+2,(u16)d);\r
}\r